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Genome-wide survey of transcriptional differences between males and females of Tribolium castaneum, the red flour beetle

ABSTRACT: Genome-wide survey of transcriptional differences between males and females of Tribolium castaneum, the red flour beetle

ORGANISM(S): Tribolium castaneum

PROVIDER: GSE18087 | GEO | 2010/05/27

SECONDARY ACCESSION(S): PRJNA119365

REPOSITORIES: GEO

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Genome-wide survey of transcriptional differences between males and females of Tribolium castaneum, the red flour beetle

Project description:Genome-wide survey of transcriptional differences between males and females of Tribolium castaneum, the red flour beetle Four biological replicates for male and female beetles with 20 individuals per replicate. Two technical replicates, one replicate per sex. 16,434 genes/expressed non-coding regions represented twice on each array. Three 60 mer probes for most exons/expressed non-coding regions. 167,538 unique genomic probes replicated twice per array.

2010-05-26 | E-GEOD-18087 | biostudies-arrayexpress

Enhancer identification and activity evaluation in the red flour beetle, Tribolium castaneum

Project description:Evolution of cis-properties (such as enhancers) often plays an important role in the production of diverse morphology. However, a mechanistic understanding is often limited by the absence of methods to study enhancers in species outside of established model systems. Here, we sought to establish methods to identify and test enhancer activity in the red flour beetle, Tribolium castaneum. To identify possible enhancer regions, we first obtained genome-wide chromatin profiles from various tissues and stages of Tribolium via FAIRE (Formaldehyde Assisted Isolation of Regulatory Elements)-sequencing. Comparison of these profiles revealed a distinct set of open chromatin regions in each tissue and stage. Second, we established the first reporter assay system that works in both Drosophila and Tribolium, using nubbin in the wing and hunchback in the embryo as case studies. Together, these advances will be useful to study the evolution of cis-language and morphological diversity in Tribolium and other insects.

2017-10-03 | GSE104495 | GEO

Deep sequencing of small RNAs from Tribolium castaneum

Project description:Characterization of miRNAs in red flour beetle Tribolium castaneum by deep sequencing of two different RNA libraries.

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Deep sequencing of small RNAs from Tribolium castaneum

Project description:Characterization of miRNAs in red flour beetle Tribolium castaneum by deep sequencing of two different RNA libraries. Sequencing of Tribolium small RNAs from adults and embryos.

2010-12-29 | E-GEOD-26036 | biostudies-arrayexpress

Dnmt1 has an essential function despite the absence of CpG DNA methylation in the red flour beetle Tribolium castaneum

Project description:Epigenetic mechanisms, such as CpG DNA methylation enable phenotypic plasticity and rapid adaptation to changing environments. CpG DNA methylation is established by DNA methyltransferases (DNMTs), which are well conserved across vertebrates and invertebrates. There are insects with functional DNA methylation despite lacking a complete set of Dnmts. But at least one of the enzymes, DNMT1, appears to be required to maintain an active DNA methylation system. The red flour beetle, Tribolium castaneum, lacks Dnmt3 but possesses Dnmt1 and it has been controversial whether it has a functional DNA methylation system. Using whole genome bisulfite sequencing, we did not find any defined patterns of CpG DNA methylation in embryos. Nevertheless, we found Dnmt1 expressed throughout the entire life cycle of the beetle, with mRNA transcripts significantly more abundant in eggs and ovaries. A maternal knockdown of Dnmt1 caused a developmental arrest in offspring embryos. We show that Dnmt1 plays an essential role in T. castaneum embryos and that its downregulation leads to an early developmental arrest. This function appears to be unrelated to DNA methylation, since we did not find any evidence for this modification. This strongly suggests an alternative role of this protein.

2018-11-14 | GSE120735 | GEO

Survey of methylomes of two beetles, Nicrophorus vespilloides and Tribolium castaneum

Project description:The presence of DNA methylation in beetles (Coleoptera) has only been investigated with bisulfite sequencing of Tribolium castaneum, which produced no evidence of DNA methylation. Here, we used whole genome bisulfite sequencing to assay if DNA methylation was present in another beetle, Nicrophorus vespilloides. We used T. castaneum as a negative control.

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Enhancer identification and activity evaluation in the red flour beetle, Tribolium castaneum

Project description:Enhancer identification and activity evaluation in the red flour beetle, Tribolium castaneum

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Tissue-specific transcriptomics, chromosomal localization, and phylogeny of chemosensory and odorant binding proteins from the red flour beetle Tribolium castaneum reveal subgroup specificities for olfaction or more general functions

Project description:Chemoreception is based on the senses of smell and taste that are crucial for animals to find new food sources, shelter, and mates. The initial step in olfaction involves the translocation of odorants from the periphery through the aqueous lymph of the olfactory sensilla to the odorant receptors by chemosensory proteins (CSPs) or odorant binding proteins (OBPs).To better understand the roles of CSPs and OBPs in a coleopteran pest species, the red flour beetle Tribolium castaneum (Coleoptera, Tenebrionidae), we performed transcriptome analyses of male and female antennae, heads, mouthparts, legs, and bodies, which revealed that all 20 CSPs and 49 of the 50 previously annotated OBPs are transcribed. Only six of the 20 CSP are significantly transcriptionally enriched in the main chemosensory tissues (antenna and/or mouthparts), whereas of the OBPs all eight members of the antenna binding proteins II (ABPII) subgroup, 18 of the 20 classic OBP subgroup, the C+OBP, and only five of the 21 C-OBPs show increased chemosensory tissue expression. By MALDI-TOF-TOF MS protein fingerprinting, we confirmed three CSPs, four ABPIIs, three classic OBPs, and four C-OBPs in the antennae.Most of the classic OBPs and all ABPIIs are involved in chemoreception. A few are also present in other tissues like odoriferous glands and testes and may be involved in release or transfer of chemical signals. The majority of the CSPs as well as the C-OBPs are not enriched in antennae or mouthparts, suggesting a more general role in the transport of hydrophobic molecules. RNAseq data obtained from different body parts of adult males and females, as well as larvae

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Project description:Genome-wide survey of transcriptional differences between males and females of Tribolium castaneum, the red flour beetle

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Project description:Genome sequencing of Tribolium castaneum GA2 (red flour beetle) adult male alternate pseudohaplotype

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